如何在Jupyter Notebook中运行路径存为字符串列表的.py文件？

Let me break down what's going on here and how to work around this quirk:

Why expressions don't work with %run directly #

IPython magic commands have their own parsing logic that’s separate from regular Python code. When you use %run, the argument you pass is treated as a literal string by IPython’s magic command parser—not a Python expression to evaluate first. That’s why:

• %run script.py (no quotes) works, since it’s a straightforward filename
• %run "my scripts/script.py" (double quotes) works, as the parser recognizes quoted strings as a single path
• But something like %run os.path.join("my scripts", "script.py") fails: IPython tries to look for a file literally named os.path.join("my scripts", "script.py") instead of evaluating the expression to get the actual path.

How to use dynamic paths with %run #

If you need to use a Python expression (like a variable holding a path, or a function that generates a path), you can bypass the magic command’s direct parsing by using IPython’s Python API instead:

import os
script_path = os.path.join("my scripts", "script.py")
get_ipython().run_line_magic('run', script_path)

The get_ipython() function gives you access to the underlying IPython instance, and run_line_magic() lets you execute the run magic with a properly evaluated Python string as its argument.

Where to find this in the docs #

This behavior is covered in IPython’s documentation on magic commands—specifically noting that magic command arguments are parsed as shell-like strings by default, not Python expressions. The section on using magic commands programmatically (via run_line_magic) explains how to integrate them with regular Python code flow.

内容的提问来源于stack exchange，提问作者Calum You